Update app.py

app.py

@@ -306,18 +306,18 @@ with gr.Blocks(theme=theme) as interface:
     generate_btn.click(
         fn=wrapper,
         inputs=[html_file, excel_files],
-        outputs=[output_html, "html_output", "pdf_output"]
+        outputs=[output_html, gr.File(), gr.File()]
     )
     download_html_btn.click(
         fn=None, 
         inputs=None,
         outputs=None,
-        _js="() => { window.open(html_output, '_blank'); }"
+        _js="() => { window.open(document.getElementById('html_output').getAttribute('href'), '_blank'); }"
     )
     download_pdf_btn.click(
         fn=None,
         inputs=None,
         outputs=None,
-        _js="() => { window.open(pdf_output, '_blank'); }"
+        _js="() => { window.open(document.getElementById('pdf_output').getAttribute('href'), '_blank'); }"
     )
 interface.launch()